[][src]Struct rand_pcg::Lcg64Xsh32

pub struct Lcg64Xsh32 { /* fields omitted */ }

A PCG random number generator (XSH RR 64/32 (LCG) variant).

Permuted Congruential Generator with 64-bit state, internal Linear Congruential Generator, and 32-bit output via "xorshift high (bits), random rotation" output function.

This is a 64-bit LCG with explicitly chosen stream with the PCG-XSH-RR output function. This combination is the standard pcg32.

Despite the name, this implementation uses 16 bytes (128 bit) space comprising 64 bits of state and 64 bits stream selector. These are both set by SeedableRng, using a 128-bit seed.


impl Lcg64Xsh32[src]

pub fn new(state: u64, stream: u64) -> Self[src]

Construct an instance compatible with PCG seed and stream.

Note that PCG specifies default values for both parameters:

  • state = 0xcafef00dd15ea5e5
  • stream = 721347520444481703

Trait Implementations

impl Clone for Lcg64Xsh32[src]

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

impl Debug for Lcg64Xsh32[src]

impl SeedableRng for Lcg64Xsh32[src]

We use a single 127-bit seed to initialise the state and select a stream. One seed bit (lowest bit of seed[8]) is ignored.

type Seed = [u8; 16]

Seed type, which is restricted to types mutably-dereferencable as u8 arrays (we recommend [u8; N] for some N). Read more

fn seed_from_u64(state: u64) -> Self[src]

Create a new PRNG using a u64 seed. Read more

fn from_rng<R>(rng: R) -> Result<Self, Error> where
    R: RngCore

Create a new PRNG seeded from another Rng. Read more

impl RngCore for Lcg64Xsh32[src]

Auto Trait Implementations

impl Send for Lcg64Xsh32

impl Sync for Lcg64Xsh32

Blanket Implementations

impl<T, U> TryFrom for T where
    U: Into<T>, 

type Error = !

🔬 This is a nightly-only experimental API. (try_from)

The type returned in the event of a conversion error.

impl<T> From for T[src]

impl<T, U> TryInto for T where
    U: TryFrom<T>, 

type Error = <U as TryFrom<T>>::Error

🔬 This is a nightly-only experimental API. (try_from)

The type returned in the event of a conversion error.

impl<T, U> Into for T where
    U: From<T>, 

impl<T> Borrow for T where
    T: ?Sized

impl<T> BorrowMut for T where
    T: ?Sized

impl<T> Any for T where
    T: 'static + ?Sized